Pros: Very small, lower power. Has a parallel port (for EMC2). Ubuntu 10.04 linux installed painlessly over usb-dvd. The sensors interface configured easily. Performance is quite responsive for typical desktop things. 3D graphics worked out of the box (glxgears >2000fps).

Cons: Ubuntu 10.04 and 10.10 don't have a driver for the ethernet chip. It does work with 11.11 alpha 3, but I didn't test it heavily. No parallel ATA. Not a big deal, but you can't use that old drive you have on the shelf.

Pros: Includes a micro-fiber cloth and a sticky film that is supposed to grab all the dust.

Cons: The instructions on the packaging are different than then ones inside. The pictures don't show how to handles the films so that they actually do what you want. Rolling back the dust film isn't easy because it likes to stick to everything. You're supposed to roll it back while you simultaneously roll on the matte film. You've really got only one shot to get it right. If not, the adhesive on the matte film picks up dust that you can't get off. Any dust keeps the matte film from laying down right.

Overall Review: My first attempt failed to be aligned perfectly. I should have just trimmed the excess with scissors and lived with it. When I tried to re-position it, it picked up dust and wouldn't lay down right. I ended up throwing it out. $40 in the trash. Miserable.

Pros: Great size Silent Modern NVIDIA graphics with 4K display support

Cons: No built in BIOS update. Can only be updated from Windows or (Free)DOS. Newest BIOS is from 2014. HDMI connector and lower antenna are very close together and limit antenna orientations (minor).

Overall Review: I'm running Linux on it now. I had to do a BIOS upgrade from FreeDOS to get it to boot from mSATA. Kubuntu 16.04.1 amd64 seems to be running fine now that the BIOS is updated.

Pros: I managed to get a Hirose DJ13 to jam into the debug port. Output only. I couldn't get a shell prompt.

Cons: It's seems to expect a RTL871X USB WiFi chip. The nano banana pi wifi listed above doesn't work.

Pros: BIOS GUI makes flexible configuration easy. BIOS can be updated from a USB drive (no operating system). Supports UEFI secure boot and legacy modes.

Cons: The "auto" mode for memory speeds isn't perfect. Some days it was finding the right speed and everything was solid. Others, it was locking up. I ended up locking the memory speed manually, then it was stable. It's not easy to switch from "auto" CPU speed to a fixed speed. In Auto, it shows the final clock, but the manual settings are for a base clock and multiplier. It's not clear what you need to match what it was finding in "auto".

Overall Review: I wrote the "stability issues" review and can't figure out how to edit it. So I wrote a new one.

Pros: Compact, integrated cables, no power supply. Looks great at 1080p.

Cons: Annoying pixel errors at 1920x1200 from a MacBook Pro mini display port. Other (lower) resolutions look far worse (unusable). Only 1080p is what you would expect. They give you two USB connections to the computer, but don't tell you why (maybe for power).